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# HomeworkSolutions1 - 2.58 (a) Not Provided; (b) W A =...

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Thermodynamics ME 200 – Spring 2012 Numerical Answers to Homework Problems Lectures 1 through 10 1.5 (a) 2 L; (b) 1.0551 kJ; (c) 74.57 kW; (d) 0.126 kg/s; (e) 2.027 bar; (f) 1.18 m 3 /s; (g) 120.7 km/h; (h) 8896 N 1.6 (a) 2500 N; (b) 981 N 1.16 –25.8 ft/s 2 (downward) SP1 2.4 kg/m 3 1.31 Not Provided 1.36 0.36 lbf/in 2 (increase in pressure) SP2 Not Provided 1.45 1.21 bar 1.51 (a) 30˚C, 303.15 K; (b) –30˚C, 243.15 K; (c) 10˚C, 283.15 K; (d) –40˚C, 233.15 K; (e) 0˚C, 273.15 K; (f) –273.15˚C, 0 K SP3 (a) 3.36 kPa; (b) Not Provided (c) 8.28 kPa 2.10 151.9 ft/s 2.21 68 kW SP4 (a) 0 kW; (b) 81.75 kW; (c) 31.25 kW 2.33 W 12 = 160.94 kJ; W 23 = 0 kJ; W 31 = –400 kJ 2.34 (a) 0.8 ft 3 ; (b) W 12 = –5.92 Btu, W 23 = 0 kJ; W 31 = 11.92 Btu 2.35 (a) 0.096 Btu/s, 0.136 hp SP5 (a) 0 kJ; (b) 0.0750 kJ; (c) 606.6 K; (d) 849.3 K 2.30 725.4 Btu 2.42 (a) (- k /2)[( l 2 l 0 ) 2 – ( l 1 l 0 ) 2 ]; (b) –20 J SP6 (b) 214.7 pisa; (c) 318.4 Btu; (d) 277.6 Btu
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Unformatted text preview: 2.58 (a) Not Provided; (b) W A = 230.26 kJ, W B = 135 kJ; (c) Q A = 30.26 kJ, Q B = 65 kJ 2.63 4.6 kJ SP7 (b) 180 kJ; (c) 907.5 kJ 2.77 (a) 0.103 m 3 ; (b) W 12 = 18.8 kJ, Q 12 = 18.8 kJ 2.82 (a) 375 MW; (b) 1.2 x 10 9 kWh/year; (c) \$ 96 M/year SP8 (b) P 2 = 6 bar, V 2 = 0.25 m 3 , P 3 = 3.09 bar, V 3 = 0.25 m 3 ; (c) Q 12 = 100 kJ, W 12 = 60 kJ, U 12 = 40 kJ, Q 23 = 50 kJ, W 23 = 0 kJ, U 23 = 50 kJ, Q 31 = 32.5 kJ, W 31 = 42.5 kJ, U 31 = 10 kJ; (d) 17.5 kJ 3.8 (a) 6.622 ft 3 /lb; (b) 127.9F; (c) 6.015 ft 3 /lb 3.12 (a) 133.6C; (b) 24.931 ft 3 /lb; (c) 0.06109 m 3 /kg SP9 (b) v 1 = 0.9482 ft 3 /lb, u 1 = 114.35 Btu/lbm, h 1 = 124.88 Btu/lbm, v 2 = 0.9482 ft 3 /lb, u 2 = 77.01 Btu/lb, h 2 = 83.47 Btu/lb, v 3 = 0.01225 ft3/lb, u 3 = 19.22 Btu/lb, h 3 = 19.32 Btu/lb 3.24 P 1 = 15.54 bar; P 2 = 1.014 bar 3.37 12.9 kJ/kg SP10 (b) 253.4 kg; (c) 0.5376 m 3...
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